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Cells - Unit 1
Cell Processes - Mini Topic
Rocks and Minerals - Mini Topic
Earth's Processes - Unit 2
Geologic Time and Earth's History
Genetics- Reproduction
Genetics - Heredity
Ethical Issues in Genetics
Intro to Evolution
Cool Science Stuff!
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7. Sources hisham
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http://www.chemicalelements.com/elements/o.html
http://chemistry.about.com/od/elementfacts/a/oxygen.htm
http://www.google.com/search?hl=en&q=oxygen+element&btnG=Google+Search\
http://www.noblemind.com/search.exe?keyword=Oxygen+Number+of+Protons&var=2
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http://chemistry.about.com/od/elementfacts/a/oxygen.htm
http://www.google.com/search?hl=en&q=oxygen+element&btnG=Google+Search\
http://www.noblemind.com/search.exe?keyword=Oxygen+Number+of+Protons&var=2